Which of the following can be inferred from the figure shown?
A) Polar bears and grizzly bears usually do not compete for the same resources.
B) Both polar bears and grizzly bears can acclimate to temperatures outside of their tolerance range, but only if they are gradually exposed to the extreme temperatures.
C) Grizzly bears outcompete polar bears where their ranges overlap.
D) Both polar bears and grizzly bears can tolerate an air temperature of 5°C.
Read the following scenario, and answer the questions below.
In North America, a toxic weed called leafy spurge was accidentally introduced and has grown and spread rapidly, covering millions of acres in north-central United States and south-central Canada. Leafy spurge is generally avoided by cattle and horses and may be toxic to them. Thus, rangeland where leafy spurge has spread has been damaged by the invasion of this plant.
A
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The longest mountain chain in the world is the
A. Appalachians. B. Midocean ridge. C. Sierra Nevada. D. Himalayas.
________ diffusion involves the relocation of people themselves from one place to another
A) Contagious B) Demic C) Normal D) Preliminary E) Critical
Which of the following is the earliest (oldest) chapter of geologic time?
A. Mesozoic B. Precambrian C. Paleozoic D. Cenozoic
The rating scale used to rate tornadoes by intensity is called the:
A. Beaufort Scale B. Saffir-Simpson Scale C. Richter Scale D. Enhanced Fujita Scale E. Tornadic Storm Scale